System and method for preventing illegal copy of digital contents on broadcasting

The present invention includes a broadcast receiver that receives a digital rights management, entitlement management credential of conditional access in order to prevent unauthorized copying of digital content at the digital broadcasting services (DRM; Digital Rights Management) and content stored by inserting the content related information to guarantee the rights to digital content by applying to the device and at the same time relates to a system and method for preventing unauthorized copying of digital broadcast content to fundamentally prevent the illegal piracy of digital content. The present invention to achieve this, create an entitlement control message control word used in the scrambling and descrambling of the content in encrypted form that subscriber only with legitimate authority is capable of receiving broadcast content, but also with the purchase of qualifying for the content conditional access system to create an entitlement management message for managing the subscriber; Broadcast transmitter to convert content received from the content provider to the scrambled broadcasting signal using the control word is said conditional access system carries to pass to the broadcast receiver; The broadcasting receiver having a scrambler to encrypt the received content; And store the desired content, comprising a descrambler for descrambling the scrambled content, storing the entitlement management message and entitlement control message, and interpretation and the content storage apparatus to request these messages on the conditional access system; containing and that is characterized.